Lead wool consists of thin strands of lead metal that can be used to cold-

caulk Caulk (also known as caulking and calking) is a material used to Seal (mechanical), seal Joint (building), joints or seams against leakage in various structures and piping. The oldest form of caulk consisted of fibrous materials driven into ...

cast iron Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its car ...

and steel pipes. It was manufactured by the New York Lead Wool Company in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

and by The Lead Wool Company, Limited in

Snodland Snodland is a town in the borough of Tonbridge and Malling in Kent, England. It lies on the River Medway, between Rochester and Maidstone, and from central London. At the 2011 Census, it had a population of 10,211. History "Snoddinglan ...

Kent Kent is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Essex across the Thames Estuary to the north, the Strait of Dover to the south-east, East Sussex to the south-west, Surrey to the west, and Gr ...

England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...

. The Lead Wool Company (the British company) was incorporated on 9 October 1919 (although some references indicate that it was active before that date) and was still active in 1983. The British company also developed a device to test pipe joints internally. The company's factory had been demolished by 1994, according to a report on archaeological excavations near the factory's site. Lead wool is presently manufactured in the UK by Calder Industrial Materials Limited.Lead Wool, Calder website
http://www.calderlead.co.uk/product/construction/wool

References

{{Reflist Lead Plumbing Companies based in Kent Textiles Lead objects